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The Heterochronic Origin of the Cleistogamous Flower in Astragalus cymbicarpos (Fabaceae)

1993; Wiley; Volume: 80; Issue: 7 Linguagem: Inglês

10.2307/2445601

1537-2197

Rafael Gallardo, Eugenio Domı́nguez, Jesús Muñoz,

Agricultural and Rural Development Research

American Journal of BotanyVolume 80, Issue 7 p. 814-823 Structure and Development THE HETEROCHRONIC ORIGIN OF THE CLEISTOGAMOUS FLOWER IN ASTRAGALUS CYMBICARPOS (FABACEAE) Rafael Gallardo, Rafael Gallardo Department of Plant Biology and Ecology, Division of Botany, University of Córdoba, Avda San Alberto Magno s/n, 14004 Córdoba, SpainSearch for more papers by this authorEugenio Dominguez, Eugenio Dominguez Department of Plant Biology and Ecology, Division of Botany, University of Córdoba, Avda San Alberto Magno s/n, 14004 Córdoba, SpainSearch for more papers by this authorJesus M. Muñoz, Jesus M. Muñoz Department of Plant Biology and Ecology, Division of Botany, University of Córdoba, Avda San Alberto Magno s/n, 14004 Córdoba, SpainSearch for more papers by this author Rafael Gallardo, Rafael Gallardo Department of Plant Biology and Ecology, Division of Botany, University of Córdoba, Avda San Alberto Magno s/n, 14004 Córdoba, SpainSearch for more papers by this authorEugenio Dominguez, Eugenio Dominguez Department of Plant Biology and Ecology, Division of Botany, University of Córdoba, Avda San Alberto Magno s/n, 14004 Córdoba, SpainSearch for more papers by this authorJesus M. Muñoz, Jesus M. Muñoz Department of Plant Biology and Ecology, Division of Botany, University of Córdoba, Avda San Alberto Magno s/n, 14004 Córdoba, SpainSearch for more papers by this author First published: 01 July 1993 https://doi.org/10.1002/j.1537-2197.1993.tb15297.xCitations: 15 Author for correspondence. AboutPDF ToolsRequest permissionExport citationAdd to favoritesTrack citation ShareShare Give accessShare full text accessShare full-text accessPlease review our Terms and Conditions of Use and check box below to share full-text version of article.I have read and accept the Wiley Online Library Terms and Conditions of UseShareable LinkUse the link below to share a full-text version of this article with your friends and colleagues. Learn more.Copy URL Share a linkShare onFacebookTwitterLinkedInRedditWechat Abstract Members of the species Astragalus cymbicarpos form chasmogamous and cleistogamous flowers, as well as a large variety of intermediate floral types. Bivariate allometry and Gould's clock models were used to investigate the possible heterochronic evolution of the cleistogamous flower from the chasmogamous flower. In three of the whorls analyzed (pistil, stamens, and corolla) comparison of chasmogamous, pseudocleistogamous, and cleistogamous flowers revealed a progressive "juvenilization" of the adult form. This paedomorphic morphology proved to be partly the result of a process of progenesis, also evident in acceleration of sexual maturity. The retardation of shape with respect to size in these three whorls suggests, however, the existence of a heterochronic process other than progenesis. Citing Literature Volume80, Issue7July 1993Pages 814-823 RelatedInformation